I could see Irvin staying, but not at the cost of Davis - they're seem to be really working to have Bernadeau be the backup center, so I'm thinking Davis stays. As far as Jarrett goes, I don't see Fox heading into the season with Smith, WW (who should be a big ST guy), and a bunch of rookies. The wild card with Jarrett IMO would be if they dropped him for a vet that was cut before the start of the season.
I think that Fox has more confidence in the rookies than Jarrett.
You have a guy in Lafell that they obviously like, it is begining to look like he is going to be the #2. They are invested in AE and seem to like him, and honestly, he seems to be a decent WR. Not spectacular yet, but he can catch. Gettis has huge potential, extremely rare size/speed combo. They are not going to risk him getting taken away on the practice squad.
So that gives you:
Wright is a ST ace and showed the ability to play WR at a pretty good level. Unless his injury is season ending, he probably stays.
Now you are at 5 WR's.
Moore, Guy, and Jarrett. Moore probably won't make the team because of too many draft picks in the mix. Guy you can stash on the PS. Jarrett still seems to have problems with the playbook, although he is much better in that aspect. Has no seperation ability and plays no ST's.
Jarrett is gone.